circadian rhythms

Question 1

biological rhythm

Answer 1

governed by:
1/ endogenous pacemakers
2/ exogenous zeitgebers

Question 2

e.g sleep wake cycle

Answer 2

• exogenous zeitgeber = drowsiness during night time (affect of daylight)
• endogenous pacemaker = does it influence our sleep cycle? research below

Question 3

siffre’s cave study

Answer 3

studies effects of biological rhythms
- deprived self of natural light/ sound BUT access to food/drink
- resurfaced in mid Sept in Alps believing it to be mid August
FOUND biological rhythm to approx 25 hrs but he continued to sleep/wake on regular schedule